Rheological studies of nickel/scandia-stabilized-zirconia screen printing inks for solid oxide fuel cell anode fabrication

Mahendra Rao Somalu, Nigel P. Brandon

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Screen printing is widely used to fabricate thick film solid oxide fuel cell (SOFC) electrodes, followed by drying and high temperature sintering. This study focuses on the rheology of such screen printing inks for the fabrication of porous composite anodes of nickel and scandia- stabilized zirconia. Inks with 1-3 wt% binder were suitable for screen printing, but inks with higher binder content were tacky and difficult to print. The particle network strength, important to the production of films with good particle connectivity and mechanical strength, increased as the binder content increased. Inks having 3 wt% binder showed the best balance of thixotropic and viscoelastic properties, resulting in printable films with minimum numbers of film defects and are therefore recommended from this study, with the texanol ink appearing to be better than terpineol due its minimum number of film defects.

Original languageEnglish
Pages (from-to)1220-1228
Number of pages9
JournalJournal of the American Ceramic Society
Volume95
Issue number4
DOIs
Publication statusPublished - Apr 2012
Externally publishedYes

Fingerprint

Scandium
Screen printing
Solid oxide fuel cells (SOFC)
Nickel
Ink
Zirconia
Anodes
Binders
Fabrication
Defects
Rheology
Thick films
Strength of materials
Drying
Sintering
zirconium oxide
Electrodes
Composite materials

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

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